S
M
T
W
T
F
S
30
84°
49°
31
85°
43°
1
76°
42°
2
72°
40°
3
70°
40°
4
72°
41°
5
73°
45°
6
79°
53°
7
83°
41°
8
82°
42°
9
72°
43°
10
71°
40°
11
71°
44°
12
76°
39°
13
70°
37°
14
69°
48°
15
76°
49°
16
80°
41°
17
73°
38°
18
68°
44°
19
74°
37°
20
73°
37°
21
66°
42°
22
65°
49°
23
77°
37°
24
78°
36°
25
64°
37°
26
64°
45°
27
69°
44°
28
73°
46°
29
71°
46°
30
75°
35°
1
74°
32°
2
65°
35°
3
60°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cannon Ball
Cannon Ball's September 2026 forecast shows daily high temperatures ranging from 60° to 85°, with overnight lows between 30° and 53°. The average high for September is 73° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Cannon Ball. See also: October | November | December.